Summary: it is one of the biggest of its kind The trap close to Poppit Sands on the Teifi Estuary in Dyfed was discovered by archaeologists studying aerial photographs of the West Wales coast This image shows the coastline curving round with the trap visible out at sea It is in water just 12ft deep and the wall is around three feet wide 此处水深12英尺 岩壁宽约3英尺
Image Dimensions: 468 x 374
Image originally found here.